commutation
UK[ˌkɒm.juˈteɪ.ʃən]US[ˌkɑː.mjəˈteɪ.ʃən]
n
The act or process of commuting a judicial sentence, especially the reduction of a severe sentence to one that is less severe.
n
The process of traveling regularly between one's place of residence and place of work.
n
The act of substituting one thing for another, especially in mathematics or electricity.
Morpheme Breakdown
com
mut
ation
com
together
mut
change
ation
noun suffix
Etymology
The word 'commutation' originates from the Latin verb commutare, meaning "to change altogether, to exchange." This verb itself is a compound of the prefix com- (intensifying "together, with") and mutare ("to change"). The core concept is one of reciprocal change or substitution. In Roman law, this idea applied to the exchange of one thing for another, such as a penalty or payment. Over centuries, this foundational meaning of exchange or substitution branched into specific modern applications: the substitution of a lesser legal penalty for a greater one, the regular exchange of location between home and work, and the mathematical substitution of quantities or the exchange of electrical currents.
Analysis
Structure: com (together) + mut (change) + ation (noun suffix)
com: Latin origin, a prefix meaning "together, with," indicating association or joint action.
mut: Latin origin, from the root mutare, meaning "to change, to exchange."
ation: Latin-derived suffix -ation, used to form nouns indicating an action or process.
Examples
The governor granted a commutation of the prisoner's death sentence to life imprisonment.
The high cost of housing in the city has led to longer commutation times for many workers.
In electrical engineering, commutation is the process by which current is switched between different windings in a motor.